Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 1313 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerCommon.cpp b/gnu/llvm/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerCommon.cpp
new file mode 100644
index 00000000000..ae238a86ab5
--- /dev/null
+++ b/gnu/llvm/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerCommon.cpp
@@ -0,0 +1,1313 @@
+//===-- GDBRemoteCommunicationServerCommon.cpp ------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "GDBRemoteCommunicationServerCommon.h"
+
+#include <errno.h>
+
+#ifdef __APPLE__
+#include <TargetConditionals.h>
+#endif
+
+#include <chrono>
+#include <cstring>
+
+#include "lldb/Core/ModuleSpec.h"
+#include "lldb/Host/Config.h"
+#include "lldb/Host/File.h"
+#include "lldb/Host/FileAction.h"
+#include "lldb/Host/FileSystem.h"
+#include "lldb/Host/Host.h"
+#include "lldb/Host/HostInfo.h"
+#include "lldb/Host/SafeMachO.h"
+#include "lldb/Interpreter/OptionArgParser.h"
+#include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Target/Platform.h"
+#include "lldb/Utility/Endian.h"
+#include "lldb/Utility/GDBRemote.h"
+#include "lldb/Utility/Log.h"
+#include "lldb/Utility/StreamString.h"
+#include "lldb/Utility/StructuredData.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Support/JSON.h"
+
+#include "ProcessGDBRemoteLog.h"
+#include "lldb/Utility/StringExtractorGDBRemote.h"
+
+#ifdef __ANDROID__
+#include "lldb/Host/android/HostInfoAndroid.h"
+#endif
+
+
+using namespace lldb;
+using namespace lldb_private::process_gdb_remote;
+using namespace lldb_private;
+
+#ifdef __ANDROID__
+const static uint32_t g_default_packet_timeout_sec = 20; // seconds
+#else
+const static uint32_t g_default_packet_timeout_sec = 0; // not specified
+#endif
+
+// GDBRemoteCommunicationServerCommon constructor
+GDBRemoteCommunicationServerCommon::GDBRemoteCommunicationServerCommon(
+    const char *comm_name, const char *listener_name)
+    : GDBRemoteCommunicationServer(comm_name, listener_name),
+      m_process_launch_info(), m_process_launch_error(), m_proc_infos(),
+      m_proc_infos_index(0), m_thread_suffix_supported(false),
+      m_list_threads_in_stop_reply(false) {
+  RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A,
+                                &GDBRemoteCommunicationServerCommon::Handle_A);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QEnvironment,
+      &GDBRemoteCommunicationServerCommon::Handle_QEnvironment);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QEnvironmentHexEncoded,
+      &GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qfProcessInfo,
+      &GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qGroupName,
+      &GDBRemoteCommunicationServerCommon::Handle_qGroupName);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qHostInfo,
+      &GDBRemoteCommunicationServerCommon::Handle_qHostInfo);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QLaunchArch,
+      &GDBRemoteCommunicationServerCommon::Handle_QLaunchArch);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess,
+      &GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply,
+      &GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qEcho,
+      &GDBRemoteCommunicationServerCommon::Handle_qEcho);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qModuleInfo,
+      &GDBRemoteCommunicationServerCommon::Handle_qModuleInfo);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_jModulesInfo,
+      &GDBRemoteCommunicationServerCommon::Handle_jModulesInfo);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod,
+      &GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir,
+      &GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qPlatform_shell,
+      &GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID,
+      &GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError,
+      &GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QSetSTDERR,
+      &GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QSetSTDIN,
+      &GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT,
+      &GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qSpeedTest,
+      &GDBRemoteCommunicationServerCommon::Handle_qSpeedTest);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qsProcessInfo,
+      &GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode,
+      &GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qSupported,
+      &GDBRemoteCommunicationServerCommon::Handle_qSupported);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported,
+      &GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_qUserName,
+      &GDBRemoteCommunicationServerCommon::Handle_qUserName);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_close,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_Close);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_exists,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_Exists);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_md5,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_MD5);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_mode,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_Mode);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_open,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_Open);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_pread,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_pRead);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_pwrite,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_size,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_Size);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_stat,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_Stat);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_symlink,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_symlink);
+  RegisterMemberFunctionHandler(
+      StringExtractorGDBRemote::eServerPacketType_vFile_unlink,
+      &GDBRemoteCommunicationServerCommon::Handle_vFile_unlink);
+}
+
+// Destructor
+GDBRemoteCommunicationServerCommon::~GDBRemoteCommunicationServerCommon() {}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qHostInfo(
+    StringExtractorGDBRemote &packet) {
+  StreamString response;
+
+  // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00
+
+  ArchSpec host_arch(HostInfo::GetArchitecture());
+  const llvm::Triple &host_triple = host_arch.GetTriple();
+  response.PutCString("triple:");
+  response.PutStringAsRawHex8(host_triple.getTriple());
+  response.Printf(";ptrsize:%u;", host_arch.GetAddressByteSize());
+
+  const char *distribution_id = host_arch.GetDistributionId().AsCString();
+  if (distribution_id) {
+    response.PutCString("distribution_id:");
+    response.PutStringAsRawHex8(distribution_id);
+    response.PutCString(";");
+  }
+
+#if defined(__APPLE__)
+  // For parity with debugserver, we'll include the vendor key.
+  response.PutCString("vendor:apple;");
+
+  // Send out MachO info.
+  uint32_t cpu = host_arch.GetMachOCPUType();
+  uint32_t sub = host_arch.GetMachOCPUSubType();
+  if (cpu != LLDB_INVALID_CPUTYPE)
+    response.Printf("cputype:%u;", cpu);
+  if (sub != LLDB_INVALID_CPUTYPE)
+    response.Printf("cpusubtype:%u;", sub);
+
+  if (cpu == llvm::MachO::CPU_TYPE_ARM || cpu == llvm::MachO::CPU_TYPE_ARM64) {
+// Indicate the OS type.
+#if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
+    response.PutCString("ostype:tvos;");
+#elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
+    response.PutCString("ostype:watchos;");
+#elif defined(TARGET_OS_BRIDGE) && TARGET_OS_BRIDGE == 1
+    response.PutCString("ostype:bridgeos;");
+#else
+    response.PutCString("ostype:ios;");
+#endif
+
+    // On arm, we use "synchronous" watchpoints which means the exception is
+    // delivered before the instruction executes.
+    response.PutCString("watchpoint_exceptions_received:before;");
+  } else {
+    response.PutCString("ostype:macosx;");
+    response.Printf("watchpoint_exceptions_received:after;");
+  }
+
+#else
+  if (host_arch.GetMachine() == llvm::Triple::aarch64 ||
+      host_arch.GetMachine() == llvm::Triple::aarch64_32 ||
+      host_arch.GetMachine() == llvm::Triple::aarch64_be ||
+      host_arch.GetMachine() == llvm::Triple::arm ||
+      host_arch.GetMachine() == llvm::Triple::armeb || host_arch.IsMIPS())
+    response.Printf("watchpoint_exceptions_received:before;");
+  else
+    response.Printf("watchpoint_exceptions_received:after;");
+#endif
+
+  switch (endian::InlHostByteOrder()) {
+  case eByteOrderBig:
+    response.PutCString("endian:big;");
+    break;
+  case eByteOrderLittle:
+    response.PutCString("endian:little;");
+    break;
+  case eByteOrderPDP:
+    response.PutCString("endian:pdp;");
+    break;
+  default:
+    response.PutCString("endian:unknown;");
+    break;
+  }
+
+  llvm::VersionTuple version = HostInfo::GetOSVersion();
+  if (!version.empty()) {
+    response.Format("os_version:{0}", version.getAsString());
+    response.PutChar(';');
+  }
+
+#if defined(__APPLE__)
+  llvm::VersionTuple maccatalyst_version = HostInfo::GetMacCatalystVersion();
+  if (!maccatalyst_version.empty()) {
+    response.Format("maccatalyst_version:{0}",
+                    maccatalyst_version.getAsString());
+    response.PutChar(';');
+  }
+#endif
+
+  std::string s;
+  if (HostInfo::GetOSBuildString(s)) {
+    response.PutCString("os_build:");
+    response.PutStringAsRawHex8(s);
+    response.PutChar(';');
+  }
+  if (HostInfo::GetOSKernelDescription(s)) {
+    response.PutCString("os_kernel:");
+    response.PutStringAsRawHex8(s);
+    response.PutChar(';');
+  }
+
+#if defined(__APPLE__)
+
+#if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
+  // For iOS devices, we are connected through a USB Mux so we never pretend to
+  // actually have a hostname as far as the remote lldb that is connecting to
+  // this lldb-platform is concerned
+  response.PutCString("hostname:");
+  response.PutStringAsRawHex8("127.0.0.1");
+  response.PutChar(';');
+#else  // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
+  if (HostInfo::GetHostname(s)) {
+    response.PutCString("hostname:");
+    response.PutStringAsRawHex8(s);
+    response.PutChar(';');
+  }
+#endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
+
+#else  // #if defined(__APPLE__)
+  if (HostInfo::GetHostname(s)) {
+    response.PutCString("hostname:");
+    response.PutStringAsRawHex8(s);
+    response.PutChar(';');
+  }
+#endif // #if defined(__APPLE__)
+
+  if (g_default_packet_timeout_sec > 0)
+    response.Printf("default_packet_timeout:%u;", g_default_packet_timeout_sec);
+
+  return SendPacketNoLock(response.GetString());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(
+    StringExtractorGDBRemote &packet) {
+  // Packet format: "qProcessInfoPID:%i" where %i is the pid
+  packet.SetFilePos(::strlen("qProcessInfoPID:"));
+  lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID);
+  if (pid != LLDB_INVALID_PROCESS_ID) {
+    ProcessInstanceInfo proc_info;
+    if (Host::GetProcessInfo(pid, proc_info)) {
+      StreamString response;
+      CreateProcessInfoResponse(proc_info, response);
+      return SendPacketNoLock(response.GetString());
+    }
+  }
+  return SendErrorResponse(1);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo(
+    StringExtractorGDBRemote &packet) {
+  m_proc_infos_index = 0;
+  m_proc_infos.Clear();
+
+  ProcessInstanceInfoMatch match_info;
+  packet.SetFilePos(::strlen("qfProcessInfo"));
+  if (packet.GetChar() == ':') {
+    llvm::StringRef key;
+    llvm::StringRef value;
+    while (packet.GetNameColonValue(key, value)) {
+      bool success = true;
+      if (key.equals("name")) {
+        StringExtractor extractor(value);
+        std::string file;
+        extractor.GetHexByteString(file);
+        match_info.GetProcessInfo().GetExecutableFile().SetFile(
+            file, FileSpec::Style::native);
+      } else if (key.equals("name_match")) {
+        NameMatch name_match = llvm::StringSwitch<NameMatch>(value)
+                                   .Case("equals", NameMatch::Equals)
+                                   .Case("starts_with", NameMatch::StartsWith)
+                                   .Case("ends_with", NameMatch::EndsWith)
+                                   .Case("contains", NameMatch::Contains)
+                                   .Case("regex", NameMatch::RegularExpression)
+                                   .Default(NameMatch::Ignore);
+        match_info.SetNameMatchType(name_match);
+        if (name_match == NameMatch::Ignore)
+          return SendErrorResponse(2);
+      } else if (key.equals("pid")) {
+        lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
+        if (value.getAsInteger(0, pid))
+          return SendErrorResponse(2);
+        match_info.GetProcessInfo().SetProcessID(pid);
+      } else if (key.equals("parent_pid")) {
+        lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
+        if (value.getAsInteger(0, pid))
+          return SendErrorResponse(2);
+        match_info.GetProcessInfo().SetParentProcessID(pid);
+      } else if (key.equals("uid")) {
+        uint32_t uid = UINT32_MAX;
+        if (value.getAsInteger(0, uid))
+          return SendErrorResponse(2);
+        match_info.GetProcessInfo().SetUserID(uid);
+      } else if (key.equals("gid")) {
+        uint32_t gid = UINT32_MAX;
+        if (value.getAsInteger(0, gid))
+          return SendErrorResponse(2);
+        match_info.GetProcessInfo().SetGroupID(gid);
+      } else if (key.equals("euid")) {
+        uint32_t uid = UINT32_MAX;
+        if (value.getAsInteger(0, uid))
+          return SendErrorResponse(2);
+        match_info.GetProcessInfo().SetEffectiveUserID(uid);
+      } else if (key.equals("egid")) {
+        uint32_t gid = UINT32_MAX;
+        if (value.getAsInteger(0, gid))
+          return SendErrorResponse(2);
+        match_info.GetProcessInfo().SetEffectiveGroupID(gid);
+      } else if (key.equals("all_users")) {
+        match_info.SetMatchAllUsers(
+            OptionArgParser::ToBoolean(value, false, &success));
+      } else if (key.equals("triple")) {
+        match_info.GetProcessInfo().GetArchitecture() =
+            HostInfo::GetAugmentedArchSpec(value);
+      } else {
+        success = false;
+      }
+
+      if (!success)
+        return SendErrorResponse(2);
+    }
+  }
+
+  if (Host::FindProcesses(match_info, m_proc_infos)) {
+    // We found something, return the first item by calling the get subsequent
+    // process info packet handler...
+    return Handle_qsProcessInfo(packet);
+  }
+  return SendErrorResponse(3);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo(
+    StringExtractorGDBRemote &packet) {
+  if (m_proc_infos_index < m_proc_infos.GetSize()) {
+    StreamString response;
+    CreateProcessInfoResponse(
+        m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response);
+    ++m_proc_infos_index;
+    return SendPacketNoLock(response.GetString());
+  }
+  return SendErrorResponse(4);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qUserName(
+    StringExtractorGDBRemote &packet) {
+#if LLDB_ENABLE_POSIX
+  Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+  LLDB_LOGF(log, "GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__);
+
+  // Packet format: "qUserName:%i" where %i is the uid
+  packet.SetFilePos(::strlen("qUserName:"));
+  uint32_t uid = packet.GetU32(UINT32_MAX);
+  if (uid != UINT32_MAX) {
+    if (llvm::Optional<llvm::StringRef> name =
+            HostInfo::GetUserIDResolver().GetUserName(uid)) {
+      StreamString response;
+      response.PutStringAsRawHex8(*name);
+      return SendPacketNoLock(response.GetString());
+    }
+  }
+  LLDB_LOGF(log, "GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__);
+#endif
+  return SendErrorResponse(5);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qGroupName(
+    StringExtractorGDBRemote &packet) {
+#if LLDB_ENABLE_POSIX
+  // Packet format: "qGroupName:%i" where %i is the gid
+  packet.SetFilePos(::strlen("qGroupName:"));
+  uint32_t gid = packet.GetU32(UINT32_MAX);
+  if (gid != UINT32_MAX) {
+    if (llvm::Optional<llvm::StringRef> name =
+            HostInfo::GetUserIDResolver().GetGroupName(gid)) {
+      StreamString response;
+      response.PutStringAsRawHex8(*name);
+      return SendPacketNoLock(response.GetString());
+    }
+  }
+#endif
+  return SendErrorResponse(6);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qSpeedTest(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("qSpeedTest:"));
+
+  llvm::StringRef key;
+  llvm::StringRef value;
+  bool success = packet.GetNameColonValue(key, value);
+  if (success && key.equals("response_size")) {
+    uint32_t response_size = 0;
+    if (!value.getAsInteger(0, response_size)) {
+      if (response_size == 0)
+        return SendOKResponse();
+      StreamString response;
+      uint32_t bytes_left = response_size;
+      response.PutCString("data:");
+      while (bytes_left > 0) {
+        if (bytes_left >= 26) {
+          response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+          bytes_left -= 26;
+        } else {
+          response.Printf("%*.*s;", bytes_left, bytes_left,
+                          "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+          bytes_left = 0;
+        }
+      }
+      return SendPacketNoLock(response.GetString());
+    }
+  }
+  return SendErrorResponse(7);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:open:"));
+  std::string path;
+  packet.GetHexByteStringTerminatedBy(path, ',');
+  if (!path.empty()) {
+    if (packet.GetChar() == ',') {
+      // FIXME
+      // The flag values for OpenOptions do not match the values used by GDB
+      // * https://sourceware.org/gdb/onlinedocs/gdb/Open-Flags.html#Open-Flags
+      // * rdar://problem/46788934
+      auto flags = File::OpenOptions(packet.GetHexMaxU32(false, 0));
+      if (packet.GetChar() == ',') {
+        mode_t mode = packet.GetHexMaxU32(false, 0600);
+        FileSpec path_spec(path);
+        FileSystem::Instance().Resolve(path_spec);
+        // Do not close fd.
+        auto file = FileSystem::Instance().Open(path_spec, flags, mode, false);
+
+        int save_errno = 0;
+        int descriptor = File::kInvalidDescriptor;
+        if (file) {
+          descriptor = file.get()->GetDescriptor();
+        } else {
+          std::error_code code = errorToErrorCode(file.takeError());
+          if (code.category() == std::system_category()) {
+            save_errno = code.value();
+          }
+        }
+
+        StreamString response;
+        response.PutChar('F');
+        response.Printf("%i", descriptor);
+        if (save_errno)
+          response.Printf(",%i", save_errno);
+        return SendPacketNoLock(response.GetString());
+      }
+    }
+  }
+  return SendErrorResponse(18);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:close:"));
+  int fd = packet.GetS32(-1);
+  int err = -1;
+  int save_errno = 0;
+  if (fd >= 0) {
+    NativeFile file(fd, File::OpenOptions(0), true);
+    Status error = file.Close();
+    err = 0;
+    save_errno = error.GetError();
+  } else {
+    save_errno = EINVAL;
+  }
+  StreamString response;
+  response.PutChar('F');
+  response.Printf("%i", err);
+  if (save_errno)
+    response.Printf(",%i", save_errno);
+  return SendPacketNoLock(response.GetString());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
+    StringExtractorGDBRemote &packet) {
+  StreamGDBRemote response;
+  packet.SetFilePos(::strlen("vFile:pread:"));
+  int fd = packet.GetS32(-1);
+  if (packet.GetChar() == ',') {
+    size_t count = packet.GetU64(SIZE_MAX);
+    if (packet.GetChar() == ',') {
+      off_t offset = packet.GetU64(UINT32_MAX);
+      if (count == SIZE_MAX) {
+        response.Printf("F-1:%i", EINVAL);
+        return SendPacketNoLock(response.GetString());
+      }
+
+      std::string buffer(count, 0);
+      NativeFile file(fd, File::eOpenOptionRead, false);
+      Status error = file.Read(static_cast<void *>(&buffer[0]), count, offset);
+      const ssize_t bytes_read = error.Success() ? count : -1;
+      const int save_errno = error.GetError();
+      response.PutChar('F');
+      response.Printf("%zi", bytes_read);
+      if (save_errno)
+        response.Printf(",%i", save_errno);
+      else {
+        response.PutChar(';');
+        response.PutEscapedBytes(&buffer[0], bytes_read);
+      }
+      return SendPacketNoLock(response.GetString());
+    }
+  }
+  return SendErrorResponse(21);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:pwrite:"));
+
+  StreamGDBRemote response;
+  response.PutChar('F');
+
+  int fd = packet.GetU32(UINT32_MAX);
+  if (packet.GetChar() == ',') {
+    off_t offset = packet.GetU64(UINT32_MAX);
+    if (packet.GetChar() == ',') {
+      std::string buffer;
+      if (packet.GetEscapedBinaryData(buffer)) {
+        NativeFile file(fd, File::eOpenOptionWrite, false);
+        size_t count = buffer.size();
+        Status error =
+            file.Write(static_cast<const void *>(&buffer[0]), count, offset);
+        const ssize_t bytes_written = error.Success() ? count : -1;
+        const int save_errno = error.GetError();
+        response.Printf("%zi", bytes_written);
+        if (save_errno)
+          response.Printf(",%i", save_errno);
+      } else {
+        response.Printf("-1,%i", EINVAL);
+      }
+      return SendPacketNoLock(response.GetString());
+    }
+  }
+  return SendErrorResponse(27);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:size:"));
+  std::string path;
+  packet.GetHexByteString(path);
+  if (!path.empty()) {
+    uint64_t Size;
+    if (llvm::sys::fs::file_size(path, Size))
+      return SendErrorResponse(5);
+    StreamString response;
+    response.PutChar('F');
+    response.PutHex64(Size);
+    if (Size == UINT64_MAX) {
+      response.PutChar(',');
+      response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
+    }
+    return SendPacketNoLock(response.GetString());
+  }
+  return SendErrorResponse(22);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:mode:"));
+  std::string path;
+  packet.GetHexByteString(path);
+  if (!path.empty()) {
+    FileSpec file_spec(path);
+    FileSystem::Instance().Resolve(file_spec);
+    std::error_code ec;
+    const uint32_t mode = FileSystem::Instance().GetPermissions(file_spec, ec);
+    StreamString response;
+    response.Printf("F%u", mode);
+    if (mode == 0 || ec)
+      response.Printf(",%i", (int)Status(ec).GetError());
+    return SendPacketNoLock(response.GetString());
+  }
+  return SendErrorResponse(23);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:exists:"));
+  std::string path;
+  packet.GetHexByteString(path);
+  if (!path.empty()) {
+    bool retcode = llvm::sys::fs::exists(path);
+    StreamString response;
+    response.PutChar('F');
+    response.PutChar(',');
+    if (retcode)
+      response.PutChar('1');
+    else
+      response.PutChar('0');
+    return SendPacketNoLock(response.GetString());
+  }
+  return SendErrorResponse(24);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:symlink:"));
+  std::string dst, src;
+  packet.GetHexByteStringTerminatedBy(dst, ',');
+  packet.GetChar(); // Skip ',' char
+  packet.GetHexByteString(src);
+
+  FileSpec src_spec(src);
+  FileSystem::Instance().Resolve(src_spec);
+  Status error = FileSystem::Instance().Symlink(src_spec, FileSpec(dst));
+
+  StreamString response;
+  response.Printf("F%u,%u", error.GetError(), error.GetError());
+  return SendPacketNoLock(response.GetString());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:unlink:"));
+  std::string path;
+  packet.GetHexByteString(path);
+  Status error(llvm::sys::fs::remove(path));
+  StreamString response;
+  response.Printf("F%u,%u", error.GetError(), error.GetError());
+  return SendPacketNoLock(response.GetString());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("qPlatform_shell:"));
+  std::string path;
+  std::string working_dir;
+  packet.GetHexByteStringTerminatedBy(path, ',');
+  if (!path.empty()) {
+    if (packet.GetChar() == ',') {
+      // FIXME: add timeout to qPlatform_shell packet
+      // uint32_t timeout = packet.GetHexMaxU32(false, 32);
+      if (packet.GetChar() == ',')
+        packet.GetHexByteString(working_dir);
+      int status, signo;
+      std::string output;
+      FileSpec working_spec(working_dir);
+      FileSystem::Instance().Resolve(working_spec);
+      Status err =
+          Host::RunShellCommand(path.c_str(), working_spec, &status, &signo,
+                                &output, std::chrono::seconds(10));
+      StreamGDBRemote response;
+      if (err.Fail()) {
+        response.PutCString("F,");
+        response.PutHex32(UINT32_MAX);
+      } else {
+        response.PutCString("F,");
+        response.PutHex32(status);
+        response.PutChar(',');
+        response.PutHex32(signo);
+        response.PutChar(',');
+        response.PutEscapedBytes(output.c_str(), output.size());
+      }
+      return SendPacketNoLock(response.GetString());
+    }
+  }
+  return SendErrorResponse(24);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
+    StringExtractorGDBRemote &packet) {
+  return SendUnimplementedResponse(
+      "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("vFile:MD5:"));
+  std::string path;
+  packet.GetHexByteString(path);
+  if (!path.empty()) {
+    StreamGDBRemote response;
+    auto Result = llvm::sys::fs::md5_contents(path);
+    if (!Result) {
+      response.PutCString("F,");
+      response.PutCString("x");
+    } else {
+      response.PutCString("F,");
+      response.PutHex64(Result->low());
+      response.PutHex64(Result->high());
+    }
+    return SendPacketNoLock(response.GetString());
+  }
+  return SendErrorResponse(25);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("qPlatform_mkdir:"));
+  mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
+  if (packet.GetChar() == ',') {
+    std::string path;
+    packet.GetHexByteString(path);
+    Status error(llvm::sys::fs::create_directory(path, mode));
+
+    StreamGDBRemote response;
+    response.Printf("F%u", error.GetError());
+
+    return SendPacketNoLock(response.GetString());
+  }
+  return SendErrorResponse(20);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("qPlatform_chmod:"));
+
+  auto perms =
+      static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
+  if (packet.GetChar() == ',') {
+    std::string path;
+    packet.GetHexByteString(path);
+    Status error(llvm::sys::fs::setPermissions(path, perms));
+
+    StreamGDBRemote response;
+    response.Printf("F%u", error.GetError());
+
+    return SendPacketNoLock(response.GetString());
+  }
+  return SendErrorResponse(19);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qSupported(
+    StringExtractorGDBRemote &packet) {
+  StreamGDBRemote response;
+
+  // Features common to lldb-platform and llgs.
+  uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
+                                         // size--debugger can always use less
+  response.Printf("PacketSize=%x", max_packet_size);
+
+  response.PutCString(";QStartNoAckMode+");
+  response.PutCString(";QThreadSuffixSupported+");
+  response.PutCString(";QListThreadsInStopReply+");
+  response.PutCString(";qEcho+");
+#if defined(__linux__) || defined(__NetBSD__) || defined(__OpenBSD__)
+  response.PutCString(";QPassSignals+");
+  response.PutCString(";qXfer:auxv:read+");
+  response.PutCString(";qXfer:libraries-svr4:read+");
+#endif
+
+  return SendPacketNoLock(response.GetString());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
+    StringExtractorGDBRemote &packet) {
+  m_thread_suffix_supported = true;
+  return SendOKResponse();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
+    StringExtractorGDBRemote &packet) {
+  m_list_threads_in_stop_reply = true;
+  return SendOKResponse();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("QSetDetachOnError:"));
+  if (packet.GetU32(0))
+    m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
+  else
+    m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
+  return SendOKResponse();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
+    StringExtractorGDBRemote &packet) {
+  // Send response first before changing m_send_acks to we ack this packet
+  PacketResult packet_result = SendOKResponse();
+  m_send_acks = false;
+  return packet_result;
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("QSetSTDIN:"));
+  FileAction file_action;
+  std::string path;
+  packet.GetHexByteString(path);
+  const bool read = true;
+  const bool write = false;
+  if (file_action.Open(STDIN_FILENO, FileSpec(path), read, write)) {
+    m_process_launch_info.AppendFileAction(file_action);
+    return SendOKResponse();
+  }
+  return SendErrorResponse(15);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("QSetSTDOUT:"));
+  FileAction file_action;
+  std::string path;
+  packet.GetHexByteString(path);
+  const bool read = false;
+  const bool write = true;
+  if (file_action.Open(STDOUT_FILENO, FileSpec(path), read, write)) {
+    m_process_launch_info.AppendFileAction(file_action);
+    return SendOKResponse();
+  }
+  return SendErrorResponse(16);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("QSetSTDERR:"));
+  FileAction file_action;
+  std::string path;
+  packet.GetHexByteString(path);
+  const bool read = false;
+  const bool write = true;
+  if (file_action.Open(STDERR_FILENO, FileSpec(path), read, write)) {
+    m_process_launch_info.AppendFileAction(file_action);
+    return SendOKResponse();
+  }
+  return SendErrorResponse(17);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
+    StringExtractorGDBRemote &packet) {
+  if (m_process_launch_error.Success())
+    return SendOKResponse();
+  StreamString response;
+  response.PutChar('E');
+  response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
+  return SendPacketNoLock(response.GetString());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("QEnvironment:"));
+  const uint32_t bytes_left = packet.GetBytesLeft();
+  if (bytes_left > 0) {
+    m_process_launch_info.GetEnvironment().insert(packet.Peek());
+    return SendOKResponse();
+  }
+  return SendErrorResponse(12);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
+  const uint32_t bytes_left = packet.GetBytesLeft();
+  if (bytes_left > 0) {
+    std::string str;
+    packet.GetHexByteString(str);
+    m_process_launch_info.GetEnvironment().insert(str);
+    return SendOKResponse();
+  }
+  return SendErrorResponse(12);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("QLaunchArch:"));
+  const uint32_t bytes_left = packet.GetBytesLeft();
+  if (bytes_left > 0) {
+    const char *arch_triple = packet.Peek();
+    m_process_launch_info.SetArchitecture(
+        HostInfo::GetAugmentedArchSpec(arch_triple));
+    return SendOKResponse();
+  }
+  return SendErrorResponse(13);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_A(StringExtractorGDBRemote &packet) {
+  // The 'A' packet is the most over designed packet ever here with redundant
+  // argument indexes, redundant argument lengths and needed hex encoded
+  // argument string values. Really all that is needed is a comma separated hex
+  // encoded argument value list, but we will stay true to the documented
+  // version of the 'A' packet here...
+
+  Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+  int actual_arg_index = 0;
+
+  packet.SetFilePos(1); // Skip the 'A'
+  bool success = true;
+  while (success && packet.GetBytesLeft() > 0) {
+    // Decode the decimal argument string length. This length is the number of
+    // hex nibbles in the argument string value.
+    const uint32_t arg_len = packet.GetU32(UINT32_MAX);
+    if (arg_len == UINT32_MAX)
+      success = false;
+    else {
+      // Make sure the argument hex string length is followed by a comma
+      if (packet.GetChar() != ',')
+        success = false;
+      else {
+        // Decode the argument index. We ignore this really because who would
+        // really send down the arguments in a random order???
+        const uint32_t arg_idx = packet.GetU32(UINT32_MAX);
+        if (arg_idx == UINT32_MAX)
+          success = false;
+        else {
+          // Make sure the argument index is followed by a comma
+          if (packet.GetChar() != ',')
+            success = false;
+          else {
+            // Decode the argument string value from hex bytes back into a UTF8
+            // string and make sure the length matches the one supplied in the
+            // packet
+            std::string arg;
+            if (packet.GetHexByteStringFixedLength(arg, arg_len) !=
+                (arg_len / 2))
+              success = false;
+            else {
+              // If there are any bytes left
+              if (packet.GetBytesLeft()) {
+                if (packet.GetChar() != ',')
+                  success = false;
+              }
+
+              if (success) {
+                if (arg_idx == 0)
+                  m_process_launch_info.GetExecutableFile().SetFile(
+                      arg, FileSpec::Style::native);
+                m_process_launch_info.GetArguments().AppendArgument(arg);
+                LLDB_LOGF(log, "LLGSPacketHandler::%s added arg %d: \"%s\"",
+                          __FUNCTION__, actual_arg_index, arg.c_str());
+                ++actual_arg_index;
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  if (success) {
+    m_process_launch_error = LaunchProcess();
+    if (m_process_launch_error.Success())
+      return SendOKResponse();
+    LLDB_LOG(log, "failed to launch exe: {0}", m_process_launch_error);
+  }
+  return SendErrorResponse(8);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qEcho(
+    StringExtractorGDBRemote &packet) {
+  // Just echo back the exact same packet for qEcho...
+  return SendPacketNoLock(packet.GetStringRef());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
+    StringExtractorGDBRemote &packet) {
+  packet.SetFilePos(::strlen("qModuleInfo:"));
+
+  std::string module_path;
+  packet.GetHexByteStringTerminatedBy(module_path, ';');
+  if (module_path.empty())
+    return SendErrorResponse(1);
+
+  if (packet.GetChar() != ';')
+    return SendErrorResponse(2);
+
+  std::string triple;
+  packet.GetHexByteString(triple);
+
+  ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
+  if (!matched_module_spec.GetFileSpec())
+    return SendErrorResponse(3);
+
+  const auto file_offset = matched_module_spec.GetObjectOffset();
+  const auto file_size = matched_module_spec.GetObjectSize();
+  const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
+
+  StreamGDBRemote response;
+
+  if (uuid_str.empty()) {
+    auto Result = llvm::sys::fs::md5_contents(
+        matched_module_spec.GetFileSpec().GetPath());
+    if (!Result)
+      return SendErrorResponse(5);
+    response.PutCString("md5:");
+    response.PutStringAsRawHex8(Result->digest());
+  } else {
+    response.PutCString("uuid:");
+    response.PutStringAsRawHex8(uuid_str);
+  }
+  response.PutChar(';');
+
+  const auto &module_arch = matched_module_spec.GetArchitecture();
+  response.PutCString("triple:");
+  response.PutStringAsRawHex8(module_arch.GetTriple().getTriple());
+  response.PutChar(';');
+
+  response.PutCString("file_path:");
+  response.PutStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
+  response.PutChar(';');
+  response.PutCString("file_offset:");
+  response.PutHex64(file_offset);
+  response.PutChar(';');
+  response.PutCString("file_size:");
+  response.PutHex64(file_size);
+  response.PutChar(';');
+
+  return SendPacketNoLock(response.GetString());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
+    StringExtractorGDBRemote &packet) {
+  namespace json = llvm::json;
+
+  packet.SetFilePos(::strlen("jModulesInfo:"));
+
+  StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
+  if (!object_sp)
+    return SendErrorResponse(1);
+
+  StructuredData::Array *packet_array = object_sp->GetAsArray();
+  if (!packet_array)
+    return SendErrorResponse(2);
+
+  json::Array response_array;
+  for (size_t i = 0; i < packet_array->GetSize(); ++i) {
+    StructuredData::Dictionary *query =
+        packet_array->GetItemAtIndex(i)->GetAsDictionary();
+    if (!query)
+      continue;
+    llvm::StringRef file, triple;
+    if (!query->GetValueForKeyAsString("file", file) ||
+        !query->GetValueForKeyAsString("triple", triple))
+      continue;
+
+    ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
+    if (!matched_module_spec.GetFileSpec())
+      continue;
+
+    const auto file_offset = matched_module_spec.GetObjectOffset();
+    const auto file_size = matched_module_spec.GetObjectSize();
+    const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
+    if (uuid_str.empty())
+      continue;
+    const auto triple_str =
+        matched_module_spec.GetArchitecture().GetTriple().getTriple();
+    const auto file_path = matched_module_spec.GetFileSpec().GetPath();
+
+    json::Object response{{"uuid", uuid_str},
+                          {"triple", triple_str},
+                          {"file_path", file_path},
+                          {"file_offset", static_cast<int64_t>(file_offset)},
+                          {"file_size", static_cast<int64_t>(file_size)}};
+    response_array.push_back(std::move(response));
+  }
+
+  StreamString response;
+  response.AsRawOstream() << std::move(response_array);
+  StreamGDBRemote escaped_response;
+  escaped_response.PutEscapedBytes(response.GetString().data(),
+                                   response.GetSize());
+  return SendPacketNoLock(escaped_response.GetString());
+}
+
+void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
+    const ProcessInstanceInfo &proc_info, StreamString &response) {
+  response.Printf(
+      "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
+      proc_info.GetProcessID(), proc_info.GetParentProcessID(),
+      proc_info.GetUserID(), proc_info.GetGroupID(),
+      proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
+  response.PutCString("name:");
+  response.PutStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
+
+  response.PutChar(';');
+  response.PutCString("args:");
+  response.PutStringAsRawHex8(proc_info.GetArg0());
+  for (auto &arg : proc_info.GetArguments()) {
+    response.PutChar('-');
+    response.PutStringAsRawHex8(arg.ref());
+  }
+
+  response.PutChar(';');
+  const ArchSpec &proc_arch = proc_info.GetArchitecture();
+  if (proc_arch.IsValid()) {
+    const llvm::Triple &proc_triple = proc_arch.GetTriple();
+    response.PutCString("triple:");
+    response.PutStringAsRawHex8(proc_triple.getTriple());
+    response.PutChar(';');
+  }
+}
+
+void GDBRemoteCommunicationServerCommon::
+    CreateProcessInfoResponse_DebugServerStyle(
+        const ProcessInstanceInfo &proc_info, StreamString &response) {
+  response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
+                  ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
+                  proc_info.GetProcessID(), proc_info.GetParentProcessID(),
+                  proc_info.GetUserID(), proc_info.GetGroupID(),
+                  proc_info.GetEffectiveUserID(),
+                  proc_info.GetEffectiveGroupID());
+
+  const ArchSpec &proc_arch = proc_info.GetArchitecture();
+  if (proc_arch.IsValid()) {
+    const llvm::Triple &proc_triple = proc_arch.GetTriple();
+#if defined(__APPLE__)
+    // We'll send cputype/cpusubtype.
+    const uint32_t cpu_type = proc_arch.GetMachOCPUType();
+    if (cpu_type != 0)
+      response.Printf("cputype:%" PRIx32 ";", cpu_type);
+
+    const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
+    if (cpu_subtype != 0)
+      response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
+
+    const std::string vendor = proc_triple.getVendorName();
+    if (!vendor.empty())
+      response.Printf("vendor:%s;", vendor.c_str());
+#else
+    // We'll send the triple.
+    response.PutCString("triple:");
+    response.PutStringAsRawHex8(proc_triple.getTriple());
+    response.PutChar(';');
+#endif
+    std::string ostype = proc_triple.getOSName();
+    // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
+    if (proc_triple.getVendor() == llvm::Triple::Apple) {
+      switch (proc_triple.getArch()) {
+      case llvm::Triple::arm:
+      case llvm::Triple::thumb:
+      case llvm::Triple::aarch64:
+      case llvm::Triple::aarch64_32:
+        ostype = "ios";
+        break;
+      default:
+        // No change.
+        break;
+      }
+    }
+    response.Printf("ostype:%s;", ostype.c_str());
+
+    switch (proc_arch.GetByteOrder()) {
+    case lldb::eByteOrderLittle:
+      response.PutCString("endian:little;");
+      break;
+    case lldb::eByteOrderBig:
+      response.PutCString("endian:big;");
+      break;
+    case lldb::eByteOrderPDP:
+      response.PutCString("endian:pdp;");
+      break;
+    default:
+      // Nothing.
+      break;
+    }
+    // In case of MIPS64, pointer size is depend on ELF ABI For N32 the pointer
+    // size is 4 and for N64 it is 8
+    std::string abi = proc_arch.GetTargetABI();
+    if (!abi.empty())
+      response.Printf("elf_abi:%s;", abi.c_str());
+    response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
+  }
+}
+
+FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
+    const std::string &module_path, const ArchSpec &arch) {
+#ifdef __ANDROID__
+  return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
+#else
+  FileSpec file_spec(module_path);
+  FileSystem::Instance().Resolve(file_spec);
+  return file_spec;
+#endif
+}
+
+ModuleSpec
+GDBRemoteCommunicationServerCommon::GetModuleInfo(llvm::StringRef module_path,
+                                                  llvm::StringRef triple) {
+  ArchSpec arch(triple);
+
+  FileSpec req_module_path_spec(module_path);
+  FileSystem::Instance().Resolve(req_module_path_spec);
+
+  const FileSpec module_path_spec =
+      FindModuleFile(req_module_path_spec.GetPath(), arch);
+  const ModuleSpec module_spec(module_path_spec, arch);
+
+  ModuleSpecList module_specs;
+  if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
+                                           module_specs))
+    return ModuleSpec();
+
+  ModuleSpec matched_module_spec;
+  if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
+    return ModuleSpec();
+
+  return matched_module_spec;
+}